def nn(y):
    return y % 4 == 0 and (y % 100 != 0 or y % 400 == 0)
def kt(d, m, y):
    if m < 1 or m > 12:
        return False
    if m in [1, 3, 5, 7, 8, 10, 12]:
        return 1 <= d <= 31
    elif m in [4, 6, 9, 11]:
        return 1 <= d <= 30
    elif m == 2:
        if nn(y):
            return 1 <= d <= 29
        else:
            return 1 <= d <= 28
    return False
n = int(input())
for _ in range(n):
    ch = True
    s = input()
    if len(s) == 4:
        d = int(s[0])
        m = int(s[1])
        y = int(s[2:4]) + 2000
        if kt(d, m, y):
            print(f"{d}/{m}/{y}")
        else:
            print("NO")
    elif len(s) == 5:
        d1 = int(s[0:2])
        m1 = int(s[2])
        y1 = int(s[3:5]) + 2000
        d2 = int(s[0])
        m2 = int(s[1:3])
        ch = True
        if kt(d1, m1, y1):
            print(f"{d1}/{m1}/{y1}")
            ch = False
        if kt(d2, m2, y1):
            print(f"{d2}/{m2}/{y1}")
            ch = False
        if ch:
            print("NO")
    else:
        print("NO")